Abstract: A device for checking the internal temperature of food, which includes a piercing element for insertion into food and a temperature sensor integral with the piercing element. The piercing element is connected to a main handle, which is removably connected to a handle portion. The handle portion contains a display, electronically connected to the temperature sensor, whereby the temperature sensed by the temperature sensor and, in some embodiments, the level of doneness is displayed by the display. In this embodiment, the piercing element and main handle are dishwasher safe and can be inserted safely into a dishwasher when the handle portion, containing a substantial portion of the electronics, is removed.